I think it will help not exclusively _Linux_ but it will help more to get real support behind graphics drivers. Sure, some of this is directly related to the kernel (like power management, switchable graphics etc.) but mostly it is stuff which isn't directly related to the kernel (e.g. mesa, xorg, wayland). What I see recently that AMD has really stepped up too (if you own Radeon HD, not the very old Xwhatever series), contributing to kernel code and mesa drivers. Nvidia has some pretty good proprietary drivers, but heh... they are proprietary. Thats the main problem I have: Both AMD/Nvidia closed drivers offer better 3D performance, better feature support for their chips etc. but when I have trouble with graphics on my system, it's because of the closed drivers. You never know if they still work after updating.